MITSUBISHI MICROCOMPUTERS
M37270MF-XXXSP
M37270EF-XXXSP, M37270EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
Data bus
8
X
CIN
CM
7
TMR1
5
1/4096
Timer 1 latch (8)
8
X
IN
1/2
1/8
TMR1
0
TMR1
2
TMR1
4
Timer 1 (8)
8
8
Timer 1
interrupt request
Timer 2 latch (8)
8
P4
2
/TIM2
TMR1
1
TMR1
3
Timer 2 (8)
8
8
Timer 2
interrupt request
FF
16
TM3EL
Timer 3 latch (8)
8
Reset
STP instruction
P4
3
/TIM3
TMR2
0
TMR2
2
Timer 3 (8)
8
8
Timer 3
interrupt request
TMR2
1
07
16
Timer 4 latch (8)
8
Timer 4 (8)
TMR2
1
TMR2
4
TMR2
3
TMR1
6
Selection gate
:
Connected to
black colored
side at reset
TMR1 : Timer mode register 1
TMR2 : Timer mode register 2
TM3EL : Timer 3 count source
switch bit (address 00C7
16
)
CM : CPU mode register
TMR2
7
TMR2
5
8
8
Timer 4
interrupt request
Timer 5 latch (8)
8
Timer 5 (8)
8
8
Timer 5
interrupt request
Timer 6 latch (8)
8
Timer 6 (8)
TMR1
7
TMR2
6
8
Timer 6
interrupt request
Notes 1:
“H” pulse width of external clock inputs TIM2 and TIM3 needs 4 machine cycles or more.
2:
When the external clock source is selected, timers 1, 2, and 3 are counted at a rising edge of input signal.
3:
In the stop mode or the wait mode, external clock inputs TIM2 and TIM3 cannot be used.
Fig. 8. Timer block diagram
16
MITSUBISHI [ MITSUBISHI ELECTRIC SEMICONDUCTOR ]
